import tkinter as tk
import random
import threading
import time


def dow():
    window = tk.Tk()
    width = window.winfo_screenwidth()
    height = window.winfo_screenheight()
    a = random.randrange(0, width)
    b = random.randrange(0, height)
    window.title('亲爱的')
    window.geometry("220x50" + "+" + str(a) + "+" + str(b))
    tk.Label(window,
             text='我想你了!',
             bg='pink',
             font=('楷体', 18),
             width=25, height=4
             ).pack()
    window.mainloop()


if __name__ == '__main__':
    threads = []
    for i in range(5):
        t = threading.Thread(target=dow)
        threads.append(t)
        time.sleep(0.01)
        threads[i].start()
